Vulnerability · Published Mar 31, 2026 · Assigned by VulDB
CVE-2026-5204Tenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflow
High 8.8
In plain English
A high-severity stack buffer overflow in CH22 from Tenda. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 2.5% (higher than 85% of all known vulnerabilities).
Severity (CVSS 3.1)8.8High
Exploit odds (30 days)2.5%top 15.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
A vulnerability was determined in Tenda CH22 1.0.0.1. Affected is the function formWebTypeLibrary of the file /goform/webtypelibrary of the component Parameter Handler. This manipulation of the argument webSiteId causes stack-based buffer overflow. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized.
Affected products (as reported)
Weakness: CWE-121, CWE-119 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:X/RC:R
References
- VDB-354332 | Tenda CH22 Parameter webtypelibrary formWebTypeLibrary stack-based overflow vdb-entry, technical-description
- VDB-354332 | CTI Indicators (IOB, IOC, IOA) signature, permissions-required
- Submit #780209 | Tenda CH22 V1.0.0.1 Stack-based Buffer Overflow third-party-advisory
- https://github.com/Litengzheng/vuldb_new/blob/main/CH22/vul_49/README.md exploit
- https://www.tenda.com.cn/ product